Oh, now I understand. After white has moved the white joker has no move as it is it's default. Check should be checked only immediately after the enemy moved.
Ah! But now we're right back to exactly how ChessV is implemented now! Where KJK is a draw, not a win... If the Joker doesn't check the enemy, how can King+Joker possibly checkmate?
Ah! But now we're right back to exactly how ChessV is implemented now! Where KJK is a draw, not a win... If the Joker doesn't check the enemy, how can King+Joker possibly checkmate?